/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
import semver from 'semver'

export const formatDocVersion = (v: string | null = ''): string => {
  if (!v || !semver.valid(v)) {
    // All non-strings return
    return 'current'
  }
  if (semver.compareLoose(v, '6.0.0') === 1) {
    return 'current'
  } else if (semver.prerelease(v)) {
    return `${semver.major(v)}.${semver.minor(v)}-preview`
  }
  return `${semver.major(v)}.${semver.minor(v)}` || 'current'
}
